139538133 has 36 divisors (see below), whose sum is σ = 243166560. Its totient is φ = 79729272.

The previous prime is 139538123. The next prime is 139538143. The reversal of 139538133 is 331835931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139538123) and next prime (139538143).

It is not a de Polignac number, because 139538133 - 2¹⁷ = 139407061 is a prime.

It is a super-2 number, since 2×139538133² = 38941781122251378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139538123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6048 + ... + 17766.

Almost surely, 2^139538133 is an apocalyptic number.

It is an amenable number.

139538133 is a deficient number, since it is larger than the sum of its proper divisors (103628427).

139538133 is an equidigital number, since it uses as much as digits as its factorization.

139538133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11748 (or 11729 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 139538133 is about 11812.6259993280. The cubic root of 139538133 is about 518.6777711794.

The spelling of 139538133 in words is "one hundred thirty-nine million, five hundred thirty-eight thousand, one hundred thirty-three".